Optima, Gel or AGM, Advertised as both, which is it?

Chris Bryant wrote:
Geeze- 2 minutes on the Optima website gives the faq

"Optima Battery Company" wrote:
What is a gel battery? Is OPTIMA® a gel battery?
A gel battery design is typically a modification of the standard lead-acid automotive or marine battery. A gelling agent is added to the electrolyte to reduce movement inside the battery case. Many gel batteries also use one-way valves in place of open vents, which help the normal internal gasses to recombine back into water in the battery, reducing gassing. Generally, gel batteries are less tolerant of high heat and are charged at lower power than traditional or AGM batteries. An OPTIMA battery is neither a gel battery nor regular flooded battery. OPTIMA is a SPIRALCELLTECHNOLOGY AGM battery.