I'll still argue that the Mosquito was the war's best long-range bomber, only lacking in numbers. It's low casualty rate matters greatly as does it's precision. The tactic of dive-bombing increased both positive factors and practically negates the use of high-altitude flak. In combined missions with medium, the other types suffered much more. Far too much emphasis was given to defensive armament, a shibboleth Bomber Command was reluctant to back off of.
Several things at variance with the truth here, while overall the Mosquito's loss rate was lower than the big heavies, it also saw less employment in the role in terms of numbers, not only that but when the first squadron of Mosquito B.IVs entered service they were racking up loss rates comparable to existing types. It took a while for it to prove itself and again, as a long-range heavy bomber it was no more precise in hitting its target as any other bomber, having to rely on pathfinders, Oboe and Gee, and eventually H2S, with not all of these things being carried in the Mosquitoes themselves.
Let's not get our definitions of Mosquito marks confused here. The precision strikes the Mosquito are famous for were carried out by specific ground attack variants, not the long-range heavy bombers, in case you don't understand that. The use of bomber variants for low-level strike raids did happen but that didn't prevent the big bombers from doing their job; they were still needed. I also don't accept your statement "In combined missions with medium, the other types suffered much more" without evidence to back that up, e.g. specific raids, loss rates of "other types" and the Mosquito by comparison.
As for the claim of the shibboleth of Bomber Command being reluctant to back off of, as you've put it; just balls. Bomber Command had big bombers before the Mosquito and in order to carry out a strategic bombing campaign of the likes that BC and the USAAF was carrying out you need big bombers that can carry lots of bombs at once. The Mosquito was simply too small and to do the kinds of damage being asked of the bombers, big bombers were needed regardless of the Mosquito's capabilities, otherwise to do a given amount of damage over a given area you need more aircraft if they are smaller. The Germans learned the hard way that building big bombers was not easy and going for smaller bombers meant greater numbers of bombers available, but that didn't mean they didn't need bigger bombers, after all, what was the He 177 if not a big bomber? Twin-engined strategic bombers have their limitations. If you have the capability to build these aircraft, then build them and use them in the role they were designed for.
The Mosquito excelled at the tasks it was given, but that did not mean that it could ever have been a viable replacement for big heavy bombers. This is a myth that has been perpetuated in the internet age, like so many of the other myths that arise on this forum every now and then. Let's not forget, the Mosquito
was accepted by BC, but it was limited in what it could offer, strictly speaking.