TT 540 vs 540,4 ( 4mm )
Reach 376,3 vs 382mm ( 5,7mm )
Stack 559,8 vs 549,5 ( 13mm )
Head angle same
Seat angle 73,7 vs 73,9 ( 0,2 degrees)
Only bigger difference is the one that new has
Bb drop 69mm vs 80mm on the fm336 ( 11mm )
In my opinion..
If you're not a racer and like a touch higher position on bike +
Want that extra clearance for rocks to hit your frame..
Get the new one.
All those measurements are so small difference..
Take the measure tool to your hands and look those mm
😁