I haven't played B2W2 yet, but 100K exp for a level 1 Pokemon isn't the problem. The problem is struggling to get 3K for a level 50.
Not if it doesn't cost me 20 hours to do it isn't.
Hmm grinding the E4 with a lucky egg usually yields 5-7 k exp per ko at 50+ IIRC.
Whoops got a bit off topic there.