>>28601516Gen 6:
TMs are infinite so you can give moves like Earthquake to everything in your team (if they can learn it, of course)
Exp. share exists.
Gen 1:
Trainers use random moves.
Pokemon's movepools are so shit that you can easily counter them or use free turns to setup (even in E4).
Rhydon and Golem wall half of Pokedex.
Alakazam sweeps EVERYTHING.
A lot of TMs contain amazing moves.
Both are very easy if you know what you are doing.