U combine +power and base power and say that with ability/bous it is a ?/? but it is all about the ratios.
e.g if if i have tula as 3 power vs 8 powered car
i 6 pill tula = 18 attack and the opponent 6 pills 4= 24 attack
therefore i am 6 attack down so would need 2 more pills
i 6 pill tula as 7 power= 42 attack
he 6 pill 8 power card= 48 attack
by that way i need 7 pills to win but in reality i need 8. as i said before it is all about the ratios of power
A quick justification as to why I use the notation I do: It's a quick and easy way to get a general idea of the power levels a card can scale up against. For example, when I describe Minerva as a ~10/5, I am well aware she has base 8 power and -2 opp power from her ability. However, if she were to go up against Nanook (whose base + bonus combine to 8 power), pill for pill their attack would be the same. When I'm doing mid-game calculations for how much attack I need to beat a card or whatever, I always factor in the lower power(s), but outside a game it's a handy-dandy way to summarize a card and get a grasp of what it can do without wasting characters.
Also, the tilde symbol means "approximately" so if anyone says I'm claiming Blaastr Cr has 10 unopposed power or whatever, they get a scrub point.
Counting Minerva as a 10/5 is completely illogical though. The stats say it's an 8/5 with -2 opp power with a minimum of 1. Not 10/5 with -2 opp damage min 1. I just don't understand why cards are referred to in this fashion. But what I do understand is that this debate will go on forever and ever. Definitely a personal preference thing.