We clearly disagree here but here's my final say.
On Bayonetta...
I would expect a game this well reviewed to hit at least 1.3 to 1.5 Million to be considerd a success on PS3/360. It did, but no thanks to Platinum. SEGA saved them from a poor exclusive platform choice and as a result instead of sitting on approx 700K sales they're sitting on approx 1.4 million and counting. Small team or not they made a poor choice of lead platform that remains perplexing for the genre of the game
SEGA took a lot of heat for a bad port and with Sony patched it enough to make it a bit better - mainly load times - but the PS3 version still remains graphically inferior.
I have the game, it's very good.
On MadWorld...
I have the game, it's an above average game but at 3 hours not one I would judge as a full price title. The closest game I can think of in terms of being unique and short is Portal, which was TBH much better than Madworld overall.
To me it felt like a high end PSN title. Wipeout HD and Flower for example, are easily as good. Wipeout HD definately better overall. It's story was okay'ish but that was it. Some driving sections felt unfiinished to me next to the rest of the game. I certainly wasn't impressed with it as a full title.
Again, though, I think given the Wii's install base barely getting past 500K isn't anything that made me feel they made the right platform choice. I don't consider it a great sales success although critically it did fine. I see no reason it wasn't multi-platform nor looked to other avenues for release.
On Vanquish...
I have it, it's pretty good but it's weaker than Bayonetta. Stripped on a more novel lead, saddled with a poor narrative to underpin it and with gunplay that feels a little lose and a lack of clarity around the arguably real way to play the game - i.e. not as a shooter but in line with something like Bayonetta - it seems to have failed to connect and with a new CoD, GT5 and lots of other big titles rattling down the tracks I think it's going to perform worse than Bayonetta unless it really gets some stronger word of mouth to give it legs.
Better developed, but I don't believe it was marketed well enough.
On Infinite Space...
Well, I haven't actually commented on this as I haven't played it. All I can say is those look like low sales for a DS title that's been on the market for 34 weeks.
Again, I don't know what you expect. The OP invited comments on their performance and you're ranting about 'you couldn't do better' etc. How said we could? We're being critical, as is our right. And as we've been invited to evaluate we're using hindsight.
Hinsight says Platinum, whatever their size and whatever their reasons, should never have delivered Bayonetta only on 360.
Hindsight says the Wii may well not have been the right platform for Madworld. I have one, and I can tell you I really didn't feel Madworld belonged on the platform. The controls were fine, but the game really felt like it should have been on PS3/360 for me. Either way I firmly believe Platinum left sales on the table going Wii exclusive with it.
Hindsight (at this early stage) says Vanquish probably needed a more unique setting/narrative and a clearer communication of it's main 'hook'. Personally, I feel that by making something that looked so much like a Western space marine shooter Platinum took the game into an arena that wasn't best suited for it.
I like them as a quirky developer. But they made mistakes - some pretty big and obvious ones IMHO - and that's my view. I have no interest in trying to do better than they did, nor am I saying I could, but I do reserve the right as a critical customer to point their mistakes out.
Maybe you feel I should have been making excuses for them, but I don't see any need to or that they seserve any to be made.
In the end of the titles shown only Bayonetta seems to have achieved a decent level of sales IMHO.