Longevity of a manufacturer's tyres doesn't really have a read across to the quality of their batteries. Bridgestone (who were once known for their "Japanese instant skid" tyres that lasted forever) may have only given you 15k, but they'll likely have given you the compromise of more grip across a wider range of surfaces and conditions at the expense of greater wear, where Hankook have chosen a different balance.
Batteries will also be a compromise on Price V Longevity as well as other factors, and that's clear here from the ticket prices on Hankook, Varta, Trojans, Rolls, etc.
Point is: compare batteries with batteries and factor in your usage and charging ability/regimen - as is writ large through all of these threads.
Incidentally, I have 4 very ordinary sealed for life 110Ah leisure batteries now 7 years old and still doing well. I put that down to the Mastervolt Combi charger, 175a domestic alternator, a regime of not taking them below 60% and cruising sufficiently to get them back to 100% every day or two. Being an engineer, I was possibly able to sort out for myself what was the really good advice given on here and elsewhere, but there's probably a big dollop of luck in there too!