If your priority is to hide your identity: Monero anonymity > Bitcoin psuedo-anonymity.
If your priority is to hide your actions: Monero encrypted hidden amounts/recievers > Bitcoin coinjoin obfuscation (all range of amounts and connections are completely public to deobfuscate with future data)
If your priority is large anon sets (previous spends used as decoys that compound over time via ring sigs) and simple convenience:
default privacy > optional privacy
Put this all together and it is clear and indisputable that for private transactions:
Monero > Bitcoin
#MMonero #XMR