pomatools dev here. Just finished doing my analysis of how Healthy Strength works. It can be summarized like this: after you apply the Stat Variation (raised or lowered), you multiply it by 1.5 and THEN you round it down. For example, using the attached grid with a 5/5 6EX Lvl. 135 Emmet... with rock Gear and raising his attack to +6 would yield this:
[[344 + 40 (Gear) + 35 (Grid)] x 1.8 x 1.5] = [419 x 1.8 x 1.5] = 1131.3 -> 1131 Attack.
How much is this?
SS Red with Sun-Sync Nuke Build with +40 Gear, 6EX Lvl 135 reaches 1090 Sp. Attack
https://ng-pomatools.web.app/pairs/1/600?s=5&l=135&r=6&p=0&a=0&g=AAECAwQFBgkXGBkfIicpLC4vSteven with a Sync Nuke Build with +40 Gear, 6EX Lvl 135 reaches 1135 Attack
https://ng-pomatools.web.app/pairs/9000/37600?s=5&l=135&r=6&p=0&a=0&g=AAECAwQFBgcJHB8hIiMlJicuLwSo... yeah. Archeops is quite OP.