Yeah, I personally wouldn't use this to inform my own decision on what charger to purchase:

• You didn't specify the wattage on the other charger, I assume it's 15W but not certain
• You didn't specify the actual time ranges, just overall percentages
• You didn't specify what battery range you charged over (as /u/UsePreparationH stated earlier, the faster 25W charging only works below 80% or so, above that the wattage is reduced to keep battery temp down and prevent overcharging; the S20 Ultra even supported 45W charging but this only worked when the battery was really really low, again probably for the same reasons)
• I'm guessing you only tested this one time?
• The official 25W charger without cable is only $16 on Amazon, I'd say a 10% faster charge could still be worth it for that low of a price but maybe that's just me. (If you look at the reviews, make sure you filter for the 25W model, Amazon lumps in reviews for the 45W and 15W models in the list)

For real? This one says that and is only $16. I just imagined it could similarily be fake due to these threads always popping up. So, this is legit? https://www.amazon.com/dp/B08NRBRZH4/?coliid=I29MQM5SWJXUXD&colid=14CDZ5VH3GWFU&psc=1&ref_=lv_ov_lig_dp_it