Logically speaking, a psychic entity would be stronger than a physically efficient entity of the same attributes, ie same physical resistances for sure. Look to comics for the best possible analogy. Leaving cosmic entities, ie silver surfer, galactus, thanos etc aside, we quickly find that psychics are often the most powerful mutants around. Sue Storm is almost safely regarded as the most powerful member of F4, while X-man pretty much hammers everyone in the x-men verse.
Aside from comics, a psychic's power comes from the fact that resistance to mental intrusion is likely to be lower to that of a physical attack, esp if psychic entities are realistically going to kill once given a chance. How? Why not a simple forcefield within the victim's body, expanding outwards? Or telekinesis, releasing the victim from a height? That leaves out mental takeovers and psychic energies converted into concussive forces. Saying that a psychic's abilities lie in attack is incorrect, for defensive abilities as well as offensive abilities should have corresponding ties, depending on an entity's psychic abilities. Speaking in RPG lingo, if a level 60 elemental or physical user was to go up against a level 60 psychic, I would put my money on the psychic, and probably win 99 out of 100. Beside offensive abilities, of which I have only touched the tip of the iceberg, we go on to defensive abilities like teleportation and the formation of barriers. Physical entities should not even trouble a psychic, as premeditated teleporation takes care of any problems. Elemental attacks only travel as fast as the attack allows, and there is a lag time to charge the attack. For example, even if fire were to move at mach speed, about 330m/s, charge-up time notwithstanding, all a psychic needs to do is to think about setting up a barrier, and it's there. How fast do cognitive synapses allow electrical impulses to travel? Speed of light, or approximately 300000000m/s. Do the math. If both entites are of a similar level, there is little chance anything can get past the barrier at all.
The barrier might not last! Of course, nothing is infinite. however, a mental contraption borne of concentration is a lot easier to maintain than elemental attacks. How long do you think Squirtle can hold a watergun? In the game, and to a larger extent, anything requiring more than a 10 second victory for psychic entities 99% of the time, gameplay mechanics, as well as storyline techs are introduced.