- Sharingan does'nt increase speed, with or without it itachi can shuunshin behind bee before he notices, minato needed ftg and still ended up in a stalemate.
- itachi has faster reaction speed due to sharingan
- itachi can weave seals faster
- better shuriken user
Is overall stronger, OP knows minato aint got no chance so he gave him SM (not that the minato himself admitted he sucks at using it)