Shouldn't make a difference - what trips the breaker is current above the 15A fuse rating. IIRC the interrupt rating comes into play when you have a major short circuit; a major short could fuse the contact elements together - not separating and breaking the current. The 22kA (22.000 Ampere) is simply better at breaking the current in a major short situation. Should be OK by code, but IANAE...

A new breaker might nuisance break less simply by being new and unworn...