Nope, there are far too many variables in play for that to be feasible. What cpu are you using? That introduces a lot of variance, both architectural and in terms of thermal density/hot spots/thermal dissipation even at the same wattage. What constitutes "100% load"? Is it some kind of AVX workload, or not? Different workloads can have vastly different heat outputs even if they all are "100%". And some are realistic, while others (Prime95, for example) produce a completely unreasonable amount of heat compared to nearly anything else. And is this in a case or on an open test bench? In what ambient temperatures? With what other surrounding fans or other disturbing factors? As I said: there is no standard for this, so numbers are inherently incomparable. The best solution is likely using a dummy heater like what Anandtech uses for their cooler testing, as that eliminates most variables, but it also means the numbers don't apply directly to any cpu.
Edit:spelling