LRR can be also done with AK if opponents are capable of folding medium pocket pairs that are a coinflip to AK. If they dont fold 22-QQ to limp-push move, then probably they also get married to other hands like AQ, KQ, AJ that are crushed by AK.

If one have a read on opponent "not capable of folding AQ-ish type of hands preflop to limp reraiser" then AK is as good as AA/KK.