I love Ableton, and Im a Nuendo heavy user.
Ableton is like a very well, a flexible, user-friendly, sequence for dummies software. Great for beats, electronic music, warping and sampling.
small and strong army unit.
Nuendo, on the other hand is much like NATO forces with divisions in the ground air sea and space.
Even on music matters - Nuendo has this GIANT tools for composing, arranging for orchestra, score editing, mix versions, VST connect.
it is not apples/oranges but more like apples and a full meal at the “four seasons” restaurant.
then again…I LOVE Ableton.