If one was in a devious mood (which i am) then one might suggest the two bats, but for stickers, are the same bat from the same maker, the weight thing is likely to be marketing from the respective brands flogging them.
A Slazenger SX Elite Pro that I got off eBay for a rediculous amount. Bought all 8 the guy had, kept the best and sold the others. In hindsight, I'm a bit gutted I didn't keep it as a momento