Hello,
unless you also provide some execution stats of the operatoins (transitively) called from these two methods, it's hard to even give a hint. Generally, these operations are affected by a various factors. E.g. custom code (policies, workflow listeners / tasks), configuration (rules), infrastruture (DB / network latency)…
So, yes, execution time can be reduced for those but by how much is a question of what is actually going on in your system / your test case.
Regards
Axel