Do you think the Z megas will outclass these three mons base Megas?

Mega Absol is too frail and for some reason decided to invest the stats for a mixed build, however 110 sp atk without life orb or an ability to back it up isn't that impressive compared to its 150 atk and while magic bounce is nice to avoid burns and stuff from will-o-wisp or paralysis from thunder wave it would prefer an offensive ability. Mega Absol Z is still frailer than my grandma but with 151 speed and 154 physical attack and access to ghost it gains two immunities (and I guess it can use shadow sneak instead of sucker punch for 100% priority). If it were to receive sharpness it could also make use of shadow claw effectively. I wish normal Mega Absol got something like Fairy or Flying to make it more unique and access to other moves like dazzling gleam, hurricane or hyper voice, and a slightly more useful ability like pixilate or aerialate to justify the mixed set (like mega salamance that can go physical, special or mixed).

Mega Lucario Z is going fully special attacker mode with 164 and 151 speed, it's slightly less bulky having less defence than the normal Lucario. Normal MLucario is fine with adaptability, it has balanced stats with 145 atk and 140 sp ark but probably prefers a physical build with access to sword dance, bullet punch, drain punch, meteor mash and close combat, it's base ability justified can also be helpful as it can switch in to get a boost in attack, mega Lucario Z though will be running aura sphere, flash cannon, vacuum wave, depending on the ability it might play completely different but I feel like the Z one would be preferred, we already have tons of physical attackers in this metagame as it is.

Mega Garchomp Z loses ground stab, and goes special attacker gaining nasty plot and a decent 141 sp attack, it will play completely different than mega Garchomp, but like... Normal Garchomp is probably better than its mega as it's faster and can hold an item, so if mega Garchomp gets a decent ability it might make mega Garchomp useless.