t0sh doesn't understand that imperfect-cell's power when he 1st came-out was his own
& he also doesn't know that in trunks' time-line there probably weren't as many humans & he still was able to kill trunks (by sneak-attack, but still)
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& he doesn't understand that when cell came for the time-machine a 2nd-time, there were even less humans & cell made no comments abt absorbing any & trunks didn't sense any humans dying either when he came-back & cell was still confident in defeating trunks
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