Boogie+ Nigh-Absolute zero is not part of Model 8 lmao, you obviously dont know how to rate powers.
Anyway, since I'm still full of myself after fixing Iron Man's profile, I will make a proper argument on this shit:
At first glance, it seems that Delsin overwhelms with a superior arsenal of options, but listen, this is like any other quality vs quantity debate, and as in most cases, the former beats the latter.
First of all, Tony can and will absorb any of his attacks, but not in reverse. Because Iron Man manipulates and absorbs the natural forms of energy that all types matter has, while Delsin can only do it with by products of the energies (Neon naturally emits light, but light on his own can't emit neon, since its created by ionizing specific gasses), this applies to all of Delsin conduit elements.
I said it before and I'm saying it again; IM has 4-B energy absorption, in the sense that he can drastically increase his physical strength depending of energy of opponent, and that the maximun limit shown at this point is 4-B. No matter how many and/or fancy attacks Delsin throws at him, all of that will make Stark stronger, strong enough to one-shot him with single casual punch.
Tony also beats him in their dura negation, while Delsin has to get in close quarter to "transmutate" an enemie, Tony can easily destroy sub-atomically from range, with his first form of attack. He can also magnetically inmobilize Delsin with his blood, flash freeze with ice chemicals, drain his energy and reduce his strength, in any instance Rowe is vulnerable enough to being incapacitated, BFR'd, knocked out, or killed.
Yeah, is as stomp, Tony can and will destroy Delsin if any repulsor lands on him, and Delsin can't do jackshit to him with his powers (Aside from making Stark stronger), can't tank or absorb any of his attacks, and his only wincon is getting close enough to "transmutate", and Tony has so many counters for that (Forcefields, magnetism, the Uni-beam, etc).
Worse comes to worse, if Delsin somehow pose some challenge with his summons, Tony will call the Legio, and in less than a minute, Delsin will be surrounded by 5 Iron Mans that have 4-B energy absorption, and can negate durability with their first attack.