Optima batteries are way different than the traditional flooded lead acid batteries. You can not compare the two on any level. Flooded batteries can be cheap, Optima's are not. Flooded have a lifetime until the sulphate builds up, usually from allowing them to run down from storage, Optima's do not exhibit these characteristics. Optim's have a lot of cranking ability even at a low state of charge, much faster than flooded cells. Optima's do not look like traditional batteries and do not fit any of the battery trays in our old Fords. You have to deal with that yourself.
I have Optima's in my 32 and 40 and they are in old Ford script battery cases that I reworked. The 32 was really hard. Great batteries, last a long time and they will really spin a good starter under all kinds of conditions. (good starters is a whole 'nother discussion) Terrific for starting batteries in my opinion.