LogFAQs > #979777487

Gen VII - Alolan Sandlash is cool and Kartana is one of the few good Ultra Beasts, but overall a very weak lineup.

Gen IV - Lucario, Magnezone, and a bunch of bad.

Gen I - Two solid Pokemon, but a very limited roster and Magnezone is better. Only putting it above IV because IV has so many bad Pokemon.

Gen VI - Aegislash is awesome and Mega Lucario is pretty cool, but I don't care for Klefki or the other Megas.

Gen II - A small group here but all of them are a least decent, with Scizor and Skarmory being better than decent.

Gen III - Also a small group, but Aggron and Megaross rule, and even Jirachi is pretty good.

Gen IX - Tinkaton, Orthworm, and Kingambit are great, and I like Gholdengo too. A really good lineup overall but the gens above it are stacked.

Gen VIII - Corviknight and Perrserker are fantastic and the elephants are really good. The legendaries are pretty solid too. The only dud is Stunfisk

Gen V - Bisharp is my favorite Steel type, so this gen gets an automatic boost from that, but Excadrill and Escavalier are top tier Steel types too. Genesect has a sweet design and I would like it a lot if it wasn't a Mythical. The seeds and gears are pretty funny and decent in their own right. Cobalion I don't really have any strong feelings about.

Also, while we're on the subject I need to make a complaint about Escavalier. Let's look at it's Pokedex entry for Pokemon Black:

They fly around at high speed, striking with their pointed spears. Even when in trouble, they face opponents bravely.

Speed: 20

wtf