And you've ignored pretty much everything I've said.
"Looking at the Narutoverse, they have Pain, who can eat souls."
Oh no! Of the billions of souls Kahn has absorbed into his own body before he even had Blaze's power added to his own they're going to be absorbed dozens at a time!
Seriously though, the plot of MK 3 starts with Kahn merging his world with Earthrelm and forcing the souls of billions out of their bodies in an instant, pre-Blaze power.
Btw, Kahn's tier is 5-A as a minimum, Blaze infused Kahn has the destructive capacity to destroy everything in the MK universe from the planets to the space where the planets are. Kahn is only ranked 5-A because of how small the MK universe is, composing of a few worlds (plus an undefined amount of worlds merged with Outworld over the millennia), their stars, the space around them, the space between the dimensions and the space the Elder Gods reside, all of which Kahn is able to destroy with Blaze's power to destroy reality (including time and space). Kahn's DC with Blaze can be anywhere from high 5-A to low 2-C. In addition, we're assuming the power Kahn gains is limited to destructive capacity, all he know in the cannon lore is he gains the power to destroy reality, abilities increase to "omnipotent-like levels" and is granted a single wish (also ignored so far in this battle), we don't know if he gains speed and durability from this, however it's kind of silly to assume he doesn't.
Either way, one attack is going to end the Anime team if Kahn is serious so, assuming Kahn's speed and Durability are unaffected by Blaze's power, the faster opponents need to beat Kahn's clone and Kah, before he gets off an attack.