I fail to see how anyone can say one generation wins by a 'landslide' or wins easily
This. Many tough calls...
1) Modern era (PS3, 360, Wii, DS, 3DS, PSP, Vita)
Tough call, but I feel like we had every style of JRPG in the Modern era. Handheld JRPGs is a colorful mix between 16, Polygon and New-ish era style games and IMO, handhelds are just perfect for my JRPG needs (got everything covered between stuff like Trails in the Sky, Etrian Odyssey-series, Radiant Historia, Ys, the FF/DQ remakes, the grand SRPGs coming out). Consoles provided things such as Xenoblade, Last Story, Valkyria Chronicles, some of the recent Tales of... and so on.
2) 16-bit era
Tough call between this and Polygon era, but there were just so many classics and the genre really came into bloom here. Terranigma, Chrono Trigger, FFV/VI, Lufia, Breath of Fire, Phantasy Star IV are all among the best there are.
3) New-ish era
This era was gold for Shin Megami Tensei fans, had grand games such as Shadow Hearts II and Skies of Arcadia, Final Fantasy X and XII, DQ8 and many more. But it also heavily emphasised on spritebased waifu-simulations later on... kinda hit and miss, but great times.
4) Polygon era
Yeah, this was a peak in complexity and themes and technological advance for the genre. Unfortunately, many games from that era did not age gracefully, but there's no point in arguing against the likes of Grandia, FF9, FFT, Persona 2 and so on. (I... only had an N64 so I only played some games later on. Missed out on stuff like Xenogears, Suikoden and stuff so I have no strong connection to that time in regard to JRPGs)
5) 8-bit era
I think one had to be there to appreciate it fully. There was some great stuff coming up (Ys, Final Fantasy I/III, Dragon Quest III/IV) but yeah... it's difficult to grind through the originials these days if not for nostalgia sometimes. (Europe representing here... there was hardly anything in the genre coming out for us :/)
I'm thirty btw. and I find the notion that JRPGs are not a great genre anymore to be strange.