I hope you arent referring to frieza? Cause he doesn't have the physical strength necessary to destroy a planet w/ Raw power. Just because he can destroy a planet with a beam doesn't mean he can destroy one with his fists as Beams>Fists.
Bold1: That doesn't make the wiki unreliable, as we can clearly see the destructive capacity of the blasts in the manga/anime ourselves since it is much easier to interpret.Broly destroying a galaxy is a testament too how powerful Broly is.
That wiki doesnt have a powerblast scale or Energy/Ki/chakra blast scale too meassure other mangas/cartoons/comics fairly. Thus making them use The Marvel/DC terms and logic (which isnt fair because it limits other animes/series too there standard series.)
Its a fact that Dragon Ball series measure everything By Power Levels. The stronger the level shows your over all power too do damage Period! Example would be Krillin punching Cell, and Cell not moving. Why? because krillins overall power level is too low to phase him. But Goku at SS1 was able too more then do damage because his Power level overall (Fist and beams) are high enought too fight and do damage.
That Wiki has 0 credibility and should not be used when talking anything Dragon ball Z!
Bold2: Wrong. Your power level doesn't show your overall power to damage, its not as simple as that.
When Gohan used his blast during the Nappa and Vegeta fight...his power level kept increasing, why? Because beams are naturally stronger and will do more damage than your Raw Power, so Beam Destruction capabilities can't be used to judge their physical capabilities. And in no way does this show the wiki is undreliable.