Another area this comes into play is with Spirit Combat. There the text says a tie is "where both participants succeed but achieve the same quality of result". So two successes no matter what each persons spirit combat skill is or what they rolled would always be a tie. I assume that is intentional here and they want to only see lost of MP if the quality of result is different? So different than opposed skill check ties?
Which leads me to using a weapon in spirit combat. Does it work in the same way as above? IE, you need to have different quality of result? OR does it work like opposed skill checks and if both succeed then one wins depending on whether you take high roll, low roll, or whatever.