The way I see it is this: (note...personal opinion only) Star Trek might deal in hard numbers (5.1GW for a Type X phaser, 50 isotons for a photon torpedo, etc), but Star Wars does not....this leaves Star Wars pretty open to just how much power a turbolaser on a Star Destroyer, or even a Corellian Corvette has in comparison to a Star Trek TNG phaser. For all we know, a turbolaser could be every bit as powerful as a Type X phaser. The material integrity in the construction of an Imperial Star Destroyer or Corellian Corvette might be the same as a Galaxy or refit Constitution class starship. Just because it has the word "laser" in it (granted, in Trek terms, a laser is less powerful than a phaser), does not mean it is inferior. In the Star Wars universe, the term "laser" is a generic catch all term for blaster or beam weapons. Star Destoyer shields are generally planetary strength, or near planetary strength. It could take a Type X phaser a bit to cut through the shields. (Besides, some Star Wars ships have ion cannons that ignore shields and can disrupt/disable targeted ships' systems...and sorry, I don't count the whole "if it didn't happen on screen" crap. Lucasfilm Archives--since the mid 80's-- says the ships have 'em, they have 'em....and in my tribute films, they use 'em. ) (example, my still in production BattleSTAR Galactica WARS CG movie) But ultimately, to satisfy (or disgruntle) either and both fanbases, the best to be hoped for is a stalemate...or a fanfilm with alternate endings...one as a tie, one favoring Star Trek, and another favoring Star Wars.