Front engine is consider "critical" as it would have the most "adverse effect on handling characteristics and performance of the aircraft" blah blah blah. A 337 turns into a powered glider when you lose the front engine...you're going down, just very slowly.

And if you're MEL rated...multi is multi. I don't have a "Multiengine - Centerline Thrust" Column in my logbook...and he shouldn't either.