Locks that work

There's a replacement model for this lock - the 'Granit X-Plus 540'.
Looking at the ABUS website the only difference is the word 'hardened'. See 54 vs 540 . Both same weight and same security rating (15). Thoughts?

Abus granit x-plus 54 and 540 are identical only the 540 has a "housing cover with soft touch properties to prevent paintwork damage".