It's a slightly moot point - a 'comeback' implies a still competing opponent. Nintendo effectively stopped supporting the Wii at the end of 2010 (Zelda:SS did get a late 2011 release, but after that and between it and DKCR in 2010 I can't think of any major Nintendo-developed releases) for reasons best known to itself. That the PS3 could well reach 100m eventually is quite an achievement given its start, but the tortoise beating the hare would say more about the hare than it would the tortoise in this scenario.

20 Million!? And they launched within days of each other?

You honestly think the ps3 wont sell 10 million more?

More than 10 million. My bad. I think sales for the console will stall rather quickly. Different times nowadays, with iThings and Droids and many stuff people want, unlike the PS2 era.

My opinion:

If Sony invest on the software side of the PS3: The browser, music player, applications (android compatible), etc. they could easily sell the console as the ultimate Blu-ray player for the casual consumer with the ability to play games, watch photos, & stream movies/music. The PS3 as the "ultimate cheap entertainment center" can still be massively appealing while supplies for the 8th generation consoles is lacking.

Or they can make the PS3 open source and watch those sales rise. Still, I don't think Sony has the balls. They are too afraid of success (oops, I mean risk), and so Nintendo will probably come up with a good strategy keep the Wii alive.

In the end, how the PS3 and Wii fair depends on the strategic moves of their parent companies.

yes i think its highly possible of getting to 100M mark and then passing the wii but many dont
http://gamrconnect.vgchartz.com/thread.php?id=102249&page=1

as you can see at that point in time we had the majority of posters saying that 70 and 80M were the limit, just like we have in this time period but the difference is the number has magically moved up to mid 90s being the limit in due time those posters will have to succumb to the reality that they were wrong in all time periods

It's just penetrating a lot of developing markets as a high def player. People are upgrading from DVD to Blu Ray. Unlike developed countries like the US, where I'm from we don't have streaming services that provide content in HD, so instead we buy discs (Blu Ray). Plus, plenty of people finally find the system affordable after so many years. The gap will be mitigated, but will it surpass it? I have my doubts. Even if it does, buy that time it would not even matter to the great majority of us.

No.

Well... when consoles finally get into china and start selling... Most of the people there don't make much and if Nintendo sells the wii for $100 but Sony sells the ps3 for $250-$300... I think the wii will sell like crazy... Not because its a better console, just cause people can't afford a ps3...

The only big Wii titles in the 12 months before the WiiU launch were "Xenoblades Chronicles" and "The Last Story"... what an appropiate name ;)

If you take in account, that both games were late localisations of their nearly 2 year old counterparts, the Wii support ended in November 2011 with "The Legend of Zelda: Skyward Sword".

And if you want to play old Wii classics again, you have the option of a Wii console OR a WiiU console.

Now let's look at the last 12 months of the PS3 before the PS4 launch: 

11/2012: Hitman Absolution

12/2012: Far Cry 3, The Walking Dead (Full Season), Mass Effect Trilogy

01/2013: DmC: Devil May Cry, Ni No Kuni

02/2013: Sly Cooper: Thieves in Time, Dead Space 3, Skyrim Dragonborn + Dawnguard, Metal Gear Rising: Revengeance, Crysis 3, Star Wars Pinball

03/2013: Tomb Raider, BioShock Infinite, God of War: Ascencion, MLB 13: The Show, Mass Effect 3: Citadel, Darkstalkers Resurrection; Battlefield 3: End Game, Terraria

04/2013: Guacamelee!, Dishonored: The Knife of Dunwall, Dragon's Dogma: Dark Arisen, Injustice: Gods Among Us, Far Cry 3: Blood Dragon, Dishonored: The Knife of Dunwall

05/2013: Metro: Last Light, Grid 2, Call of Juarez: Gunslinger, Resident Evil: Revelations

06/2013: The Last of Us, Remember Me, D&D: Chronicles of Mystara, Hotline Miami, The Walking Dead: 400 Days, Pool Nation

07/2013: Metal Gear Solid: The Legacy Edition, NCAA Football 14, Stealth Inc.

08/2013: Dragon's Crown, Tales of Xillia, Saints Row 4, Splinter Cell Blacklist, Madden NFL 25, Spelunky

09/2013: GTA 5, Diablo 3, FIFA 14, NHL 14, Pro Evo 2014, Rayman Legends, Puppeteer, Beyond: Two Souls, Brothers: A Tale of Two Sons, Lone Survivor: D.C., Kingdom Hearts HD 1.5 ReMIX, Dead or Alive 5 Ultimate

10/2013: Batman: Arkham Origins, Battlefield 4, Assassin's Creed 4, NBA 2K14, Skylanders Swap Force, The Wolf Among Us, Lego Marvel Superheroes, Rocksmith 2014 Edition, Magrunner: Dark Pulse, F1 2013

11/2013: Call of Duty: Ghosts, Ratchet & Clank: Into the Nexus, BioShock Infinite: Burial at Sea, XCOM: Enemy Within

after the PS4 launch: Gran Turismo 6, Need for Speed: Rivals

announced: Assassin's Creed Liberation HD, Dragon Ball Z: Battle of Z, The Lego Movie Game, The Raven, Lightning Returns: FF13, Earth Defense Force 2025, Ragnarok Odyssey ACE, Castlevania: Lords of Shadow 2, Tales of Symphonia Chronicle, Thief, South Park: The Stick of Truth, Yaiba: Ninja Gaiden Z, Dark Souls 2, Atelier Escha & Logy, Final Fantasy X / X-2 HD, The Witch and the Hundred Knights, BlazBlue: Chrono Phantasma, MLB 14: The Show, Lego: The Hobbit, Minecraft, Persona 5

Quite a better support for the PS3 than for the Wii. A few of these games are already in the Instant Game Collection, many others will follow and prolong the interest in the PS3 platform for a few years.

And as long as the PS4 has no backwards compatibility, the only option to play a good share of these games (and many other PS3 exclusive games) is on a PS3 console. Even the announced Gaikai-streaming of PS3 games will be no option for many households without a very fast internet connection.

PS4 owners with PS+ but without a PS3 can add the PS3 titles additionally to the PS4 titles to their Instant Game Collection... after another price drop some of them will be tempted to get a low priced PS3. So will many PS3 owners if their device gets broken in the next years.