Raichu's Analysis
Well, let's start by saying that Electabuzz and Jolteon outclass Raichu in every Base Stat except Attack, many Earthquake users are faster than Raichu, and a certain Speed-tie now has a way of dealing with Raichu directly thanks to Drill Run. However, Raichu does have access to Base 90 offenses for Physical and Special Moves alike, making this Base 100 Speed rodent a veritable pain to deal with when you can't outrun nor tank it.

Raichu is a roadblock for many Pokemon, but it's still fragile. Base 60 HP barely goes above 300 when maxed out and Raichu users will likely max out Speed and at least 1 of its attack stats, so getting Priority chips can quickly KO it.