Right so; no he isn't. He isn't doing much other than bouncing right off of Golden Frieza, Forst, and Tagoma(or any of the named characters outside of Zarbon, Dodoria, Cui, Appule and the Ginyu force really) for starters, and he isn't surviving their attacks. That isn't even getting into speed(he is still a significant fraction of light, just as both post and pre flashpoint Supermen were, and even if Reborn Supes is no some sort of a "stacked" composite; the only major difference is that he would not be slightly FTL in reactions, since pre-flashpoint Superman was hilariously weaker and less durable than his NU counterpart, so any addition there is negligible at best)where he shouldn't have much of an advantage over Frieza, if any. And if "Final Form Cooler" is also "Mecha Cooler" from the movie; then Supes is also screwed as the movie characters were far more powerful than their pre-super canon counterparts. Cooler would hold a huuuuge speed advantage over Supes(he could react to the instant transmission technique qhich, in the movies; is described solely as a speed enhancement move that allows the user to travel, and react to speeds that allows them to traverse an entire galaxy in a day) and have more than enough power to put on severe hurt on him at that.