For example, it took Modeus drawing energy from entire starS(and burning them out), just to harm Tony physically: https://i.imgur.com/jQzsnk7.jpg https://i.imgur.com/0HpSaWz.jpg https://i.imgur.com/c2XsYSV.jpg "I don't have enough energy to fight you! But I can draw it from distant stars! For every moment I hold you down--for every blow you force me to land--an entire star system dies!"
What makes this feat even more impressive is that Tony wasn't fighting back -- he literally allowed Modeus to beat on him with power of that magnitude without even attempting to defend himself(Modeus had possessed the body of his love interest.) However, Modeus made it clear that IF Tony wanted to, he could've still easily beaten her: https://i.imgur.com/iasf7gC.jpg
He also has other crazy feats like physically pushing Singapore under water, flying around the earth at high speed while holding an object that weighed as much as a neutron star, perceiving by the picosecond, tanking black hole-esque forces, stopping the moon from rotating by nullifying its inertia, demonstrating intangibility, etc. etc.
And of course, that's all with him just accessing a fraction of his full potential. Had he actually reached said potential, Tony would have been closer to bonafide abstract-level: https://i.imgur.com/h6OTTLR.jpg
__________________
"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."
Having his essence dispersed across the multiverse.
I wouldn't go as far as to consider him potentially abstract though, given the limitations of his creators. Can elaborate when I get home this afternoon.
Yeah he's definitely a reality warper of some power and could theoretically reach the level of power of the Eleos, but given that they couldn't escape the prison humanity put them in without releasing a wave of radiation that could kill all life on the planet I wouldn't put them on the level of an abstract and honestly, probably not even a skyfather.