An interesting thought that Liv v Man C will be more of a test.
Gone are the days IMO of the big titans of football clashing (in my time I think of Keane/Viera etc), both sides dont really have an "enforcer" as such. More often than not these games come down to the awarding or non awarding of fks/penalties where fouls have been 'won' or gained by the attacking player just being much better than the defender.
So I do agree it will test the referee, more on his ability to pick up the right offences rather than managing the testesterone fueled challenges we used to see.