uchihas in general gets one-shot killing jutsus by crying over dead people,that's why i dislike the MS abilities,people may say they train for it,yeah we know every jutsu gets better with practice,but the problem is that they skip the most important and most difficult part in having a jutsu:the creation of the jutsu or learning it which takes the most of the time and effort.
for the MS,EMS,rinnegan abilities that part is inexistant since these abilities are suddenly awakened in their eyes and can be used right away.