LOL, all Thanos had to do would be to find some Kryptonite - no battle at all. If Thanos is good at anything it's finding hidden secrets of the universe, so tracking down that which is littered all over Smallville would be no problem.
He is, but he's also the quintessential plotter and schemer, and would always be prepared going into battle, using mind over muscle. Superman's true strength is a bit unknown, I mean he can pick up a mountain in Superman Returns. I think Thanos would do his research and stack the deck before going in. Even though his standard power base would likely be enough to take him out, he would likely not want to exert himself too much if avoidable.
Yeah, and considering Thanos WITHOUT the IG is on par with freakin' BROLY... Supes might go toe-to-toe with him, but lest he finds a Blue Star and immerses himself onto its core for at least 10 minutes, he's toast.
See, that's a common misconception that gets wanked to the moon and back. We saw something happen to the South Galaxy, but we're not sure how it happened or how long it took for that to happen. For all we know, Broly and Paragus planet hoped for 18 to 30 years and slowly destroyed the South Galaxy over time. This would be completely in line with what we know high end chi users are capable of. Going by quantifiable feats, Broly is at best a planet buster like practically all the DB cast.
Hey, I just wanted to give you a special thanks for giving me inspiration to make my "Majin Broly and Cell Vs Thanos and Doomsday" piece.
YOU HELPED ME BECOME MAJIN! NOW GIVE MW KAKAROT! you helped me reach perfection, and that's pretty cool you helped me fight these fools, now you won't be destroyed you are awesome... And hearing that coming from me, is I big privilege
how? lol what could Superman possibly do to hurt him? The guy is tough enough to hang with Odin for 13 pages, fast enough to catch a blitzing surfer, and the runner...and strong enough to kill the silver surfer in 7 punches