If you judge each gen by market growth then sure, this gen is the best as its the biggest essentally (so far anyway).
I think though that we've seen sacrifices regarding new IP and innovation vs profit.
I haven't really seen a single game yet on PS3 / 360 / Wii that makes me think wow, what a work of genius.
Of course, what are now seen as works of genius (Ico, System Shock, Grim Fandango, etc) all sold poorly vs more average but accessible games - so I guess we only have ourselves to blame.
Still, I do think that there is a nice level of overall quality to most decent games now - and the future should be rosy considering the differnet possibilities offered by each of the three consoles.
Try to be reasonable... its easier than you think...