A lot of criticism was thrown at publishers for releasing last gen version of their games this year, and with the front loaded sales of this gens consoles (excluding wiiu). it felt that that criticism was justified, but a look at the numbers show that publishers had a point releasing PS360 version of their biggest games.

here is a look at some numbers.

1.27 million of sales are on PS360, that is quite a lot. 

2.75 million on PS360. lots of lost sales would have happened if it were just a 8th gen game.

27% of LBP3's sales come from the PS3 version, and helps the games total sales shoot way up over a million

even though the PS360's sales here arent all that, they still represent 23% of its total sales, and both will probably go on to sell over a million combined. 

2.67 million sales for watch dogs on PS360. pretty big sales, also intersting to see the PS3 version top the xb1 version.

~ 1 million on the PS360 here, with the PS3 also toping the XB1 yet again. around one third of the sales are from the 7th gen consoles. 

38% of FH2 sales are from the 360 version.

Majority of 2015 games dont have 7th gen version, the biggiest two that do are Mortal Kombat X, which is releasing in a few months, and Tomb Raider which is releasing at the end of the year. is the right decision made by releasing 7th gen versions of these games?

If they were 8th gen only it would give more incentive to upgrade. Giving more hardware and software sales to 8th gen.

Disagree. It has allowed people to hang on to systems that are nearly a decade old and has slowed down adoption rates for new consoles.

It made sense to make cross-gen titles and might've boosted sales by 10%.
However, current-gen versions would've sold better if previous-gen versions were not existing. People just did not feel the urge to upgrade if the big and popular games still get released on their old console.

But very soon it will not be worth anymore to port.

True, but we should be mindful of the fact that these consoles have not hit mainstream prices yet. It was wise of the pubs to make cross platform releases. 

These games clearly show what a lot of people have been saying, 360 users are too satisfied with their system and thus less inclined to upgrade than PS3 users who have all clearly made the jump to PS4 already....

But seriously, I think crossgen games were still ok in 2014, but that there are still crossgen games releasing in late 2015 seriously annoys me.

I think that cross-gen games, were fine up to 2014 but from now on it's just not worth it anymore. Sales have decreased greatly.