MW50 -Secondary effects were cooling of the engine .

[RPS69]

Maybe the right question to ask TD is:

What would be the right plane attitude, to get the fastest possible climb using MW50 to a maximum of 10 minutes in game without overheating the engine?

Every plane has a best speed of climb, which combines engine cooling capability vs engine power applied vs Prop Pitch. No point on getting up there with an useless plane.

If there is an in game, intended climbing attitude with MW50, and it is better than without it, then the point is closed.

Now, if it is there not, Mustang will have the right to paraphrase Oleg himself with a different engineer nationality... "Do you think Russian engineers were morons?!"