aircraft doomed if takeoffs with maxthrust and encounter windshear?

[Wizofoz]

If ANY aircraft ever encounters windshear which is beyond it's ability to out-climb, it's a gonner.

Clearly operating closer to the aircrafts maximum performance gives you less margin- but where do you draw the line?

There are buffers built in to takeoff peformance so even a takeoff needing TOGA thrust leaves excess performance that can be used if needed.

ETA- Post crossed with the Slash, who is correct.

Take-off performance allows for an engine failure- so provided both keep running, you have that much excess performance to counter windshear.