that isn't the point, again,
if
smn does 16k dps (personal)+300 as raidbuff
and
blm does 16,1k, no raidbuff
than at this (theoretical) point smn would be stronger than blackmage
BUT
in this same scenario every dancer would buff blackmage over smn, every astro would buff blackmage over summoner, every dragoon would buff blackmage over summoner
this than would show up as
blackmage 17,5k (just for example)
smn 16k
the question is not how much rdps summoner adds, that isn't that much, the question is "on average, how many blackmages will get buffs funneled to them because their personal dps is higher than summoners?"
as everyone and their mother works under the assumption that blackmage/samurai at least win out as far as personal dps is concerned they naturally will get singled out for buffs most of the time, that has nothing to do with the amount a smn buffs the group for, that much while still there indeed isn't "that" much. also i know this may be a hard concept but you don't need to be the absolute strongest class in every content to be op, being the clearly strongest in all the hardest content while at worst "above average" in content way easier all while still offering greater support than every class even above you in what amounts to your weakest kind of content still very much qualifys.
furthermore i never said blackmage/samurai may not very well be stronger in alliance raids, if anything it would make sense for them to be as you can stay in shit and not drop dead if so inclined, and obviously less mobile classes start at a higher baseline, the point however is that buff funneling exists, in fact it happens completly naturally if you want to maximize your own potential, however it makes differences between dps look way better than they in reality are. no i'm not saying smn outright beats blackmage/samurai in alliance raids, i am however saying that the difference thats shown is way smaller in reality than looking at dps rankings makes it out to be, this isn't about smn being 200 dps or so higher, this is about these other classes being 500-1000 lower if not for buff funneling
and again, before someone else needs to remind me how the evil parsing site works . for the alliance raids fflogs actually uses dps, that is the dps actually shown on a parser while hitting the boss, they will still list your raid contribution in a "gave x, received y" way if you open the logs, but the thing you are actually ranked on is in fact simply "dps", single target buffs included