You're going to get all of the lipo cheerleaders to say they can tell the difference...
But 99% cannot, they buy a "higher" c battery, and its a placebo effect, they paid for more, so they think it works better.
Im not going to say some batteries arent better or worse then others...
Ive ran all sorts of batteries in my rigs, and honestly, aside from a few just being crappy quality, and puffing..ive never noticed a difference
I firmly beleive the C rating stuff is all BS, i run 5000mah 20c turnigys in my 90mph sc8e...and havent had a single issue! there is ZERO difference in topend, or rate of acceleration with other batteries having c ratings triple!