Is there an unneeded hostility towards regular classes in this game?

[Cabalabob]

Ok to try and put this in perspective first, comparing arcanist to summoner is like comparing WAR/WHM to PLD/WAR in ffxi, WAR/WHM fulfils a similar role to a paladin having defensive skills and cures and also has a variety of other tools at its disposal. But it will never compare to a PLD/WAR where it counts, in it's ability to tank. It has less defence, less defensive moves and it's cures are not as powerful.

As for your tests, basing them over such a short period of time doesn't give you a full perspective of the job vs class. Your arcanist may have gotten a big burst out of having blood for blood and internal release, but these buffs last for less than a minute. Once that's done arcanist damage drops like a stone, while summoner can continually deal decent damage over the longer period.

As for defensive cooldowns, you lose defence and hp by using arcanist over summoner. As with above this means you gain some defensive cool downs for 5 seconds but after that your natural defence is weaker.

So even if arcanist gets bursts of higher damage than summoner in 10 seconds, over a longer period of say 5 minutes, it will deal less damage and be less defensive.

Then there is as others have said gear versatility, summoner gets access to the mythic set, it can combine the mythic set with the allagan set to build a set where the stats complement each other, like a spell speed set or a crit set. While arcanist can only use the allagan set, this means it gets a mix of crit and spell speed and can't specialise into a particular one. Meaning it gets watered down versions of every stat while summoner can pack on a stat to make those numbers count.

I don't agree with the way SE has set classes up like this, but for now that is how they are and it can't be argued that summoner produces worse numbers than arcanist.