Nothinimportant summed it up.

Honestly it depends on your ninjas as well. If you have kazekage gaara and SN then Minato will be more usefull than obito. However if you are more geared toward danzo and Lightning main then obito is more suited for you.

Neither ninja will win you fights singlehandedly (except for masked man against lightnng blitz =P). You need to protect minato with a tanky ninja (han for example) in order to avoid being comboed, as for obito his mystery has a 3 turn cooldown so you are relying in his chase to do heavy damage and control the opponent. However remember that masked man will WEAKEN all jinchuuriki in BOTH fields so avoid using him in lineups that use jinchuuriki as DPS.

Both are great ninjas, but they are not invincible and as far as i know, the current meta teams do NOT make use of them.

His Kage version? Really?

I used to read in the forums that his Kage version was less useful even in China and Taiwan whi had 3.0 and 4.0 already.

For now the evasion rates of Jonin Minato and Masked Obito are fixed at 100% for the first attack/mystery only as far as i've seen.

I have yet to see Minato or Obito dodge something beyond that first attack on our version and I have both of them in a team which i use for PVE.