Affliction also has existed for close to 10 years and has gone through continued evolution as WoW's gameplay changed (Warlocks as a whole received at least two major changes throughout WoW's history). Summoner has been out the gate for two months. Nevermind the fundamental design differences between WoW and FFXIV.
You're right, they're longer.
You're willfully forgetting Summoner is designed around the base of Arcanist. What you have is a version of Summoner, much like Yuna deviated from Dagger who deviated from Rydia who was an entirely different animal from FFXI's Summoner.The job is very effective, but its not summoner. A summoner performs through their pet. since Its called a Summoner not Arcane mage, its main thing should be Summon damage.
Even with faster combat you'd have a job with a crapton of gimped abilities and little to no use outside of Astral Flow (by the way, the only time SMN was ever useful was after getting Alexander when your alliance leader called for Astral Flow+Alexander => Perfect Defense to cheese whatever poorly-designed high damage mechanic the devs would conjure).
Even more so when the majority of the damage is on the pet rather than the master.Pet classes in general seem to be the ones that get the most bad press in MMO communities, they are admittedly difficult to balance.
Again, what you guys should be asking for is better pet AI, a better pet UI, better response times with pets, better control over their abilities (having everything on auto-cast is one of the dumbest things I've ever seen done with pets) and a bump on pet mitigation taken from AoEs (I doubt egi's have a 90% damage reduction like WoW pets, for one).
Then you can start improving pathing, damage, utility and so on. Ifrit should be notably faster to make up for its melee limitation. Garuda should aim to stay next to the caster when not specifically placed somewhere on the field. There definitely is room for improvement, but some of you are barking up the wrong tree.