First; The lore for 40k, like all other games-workshop lore is ALWAYS written so that whatever faction is currently center stage is 80s movie badass. In don't doubt that Dan Abenett has written stuff where Gaunt and his guys use lasguns in a way that makes them uber weapons. However, in most of the fiction for 40K lasguns suck. They actually run out of ammo ALL THE TIME. One imperial guard book discusses the fact that guard in trench warefare situations will keep fires going to bake the battery packs to recharge them. Additionally, lasguns actually supposed to have crappy range because their power disspates to quickly. Finally, there is lore that says that the reason the Orks still use mostly oversized kenetic weapons is because the lasgun is hard to shoot becuase it always goes perfectly straight meaning that the natural human(oid) tendancy to try and correct for enviromental factors makes it needlessly complicated.Koumei wrote:In the lore, a lasgun can cut a man in half with ease, has effectively unlimited ammunition and has the range of a modern military rifle as opposed to "you might be able to throw the gun this far". And is quicker to use than swinging a weapon, obviously. The lore supports "These guys are slowly stomping towards us, we'll fire the guns from all the way over here" as being a viable tactic, unless the author is currently masturbating to Space Marines, in which case you'll recall that one Terminator survived getting stepped on by an Emperor Titan.
I concur that the logic of some of those points is marginal at best. However it is the lore that they have.
Basically, the lore for the lasgun is supposed to make it into the K98 or the Enfield rifle. The eldar shuriken catapult is the MP40. To keep with german guns the boltgun is the Stg44.
As for the stuff about a terminator being stepped on by a titan, remember what I said about whoever is center stage being the most badass. The lore for terminator armor is that it predates the imperium. It is the armor that humanity developed in the age when it dominated technology and didn't fear it. Its also what you have to put your body into if you want to teleport because otherwise you would be completely destroyed (note that while this is lore it is also subject to the this only applies to people not being badass right now rule).
The space marines are actually supposed to be an armored spearhead. There are not supposed to be any space marines that do not jump out of an armored vehicle, off a spaceship, or teleport straight into combat. However, even for that, the lore is that space marine armor has exactly 0 shits to give lasguns, or ork shootas. Eldar are basically at the same point. Their warrior caste guys wear armor that lets them ignore lasers.I'll accept that Space Marines want to be in close combat with Imperial Guard type punks, who are 100% unable to hurt them with knives and crap (and probably can't hurt them with chainswords and shouldn't have power weapons). Whereas they can crush infantry beneath their boots in a very literal sense. However by the same token, infantry have guns that can hurt them (and in return, their guns actually make infantry explode).
Now, in the game how effective at killing space mariens are lasguns? Well, its really freaking easy to figure that out. Guard hit with half their ranged attacks, 1/3 of their ranged attacks will wound a space marine and 1/3 of those will result in a kill. So in a squad of 10 guys shooting at marines you will get 5 hits, 1-2 wounds, and should get about .6 kills a turn.
Honestly, one thing that it generally takes people a while to figure out is that the space marines are actually better when shooting there weapons, even at guard, because they are just using a better weapon. The countervolley by 10 marines will be 6 hits/4 wounds/4 kills.
So while the lore for hte space marines is that when subuding a planet with about standard imperial level tech they should drive up in a rhino right next to the guard, jump into their fortification, and beat them in close quaters fighting, the game rules actually support the space marines as the masters of very short range firefights where they deny 80% of the games factions their armor save.