When you say "they all overestimate warming" do you mean forcing or actual temperature change?
In either case you will have to explain, because temperatures come from instruments. Simple 'models' can be used to fill in gaps but they are not going to increase temperature anomalies ten-fold. Forcing from atmospheric components is calculated from analytic formulae, not models. And the correlation between the calculated forcing and the resultant temperature change is certainly verifiable. Where, in your fevered imagination, do you come up with room for an order of magnitude error?
PS, you have been shown two studies that refute your claim that the oceans cannot be warmed by IR. I admit, the process was indirect and its not so surprising that someone might initially believe as do you. But the fact that the SST follows CO2 levels is indisputable and thus your proposal fails while the mechanism proposed by both those studies works perfectly. If you were actually into science, you'd follow the evidence, not play an exemplar of confirmation bias.