then yea it's gotta be that 55 frame for Sigi, so yea 52 would be your SSF. I would suggest to try and find the frame with 2 chatot or 4 chatot calls to verify, but if you are certain then yes go for it.
After you get accustomed to the speed and stuff, you will find that you only need to find 1 frame like how you got with this Calm sigi to be certain of your SSF, people only do multiple calls if they are not sure, cause some frames have similar pokemon stats. This happens when the amount of pokemon in the Location isn't as many as Desert Resort, and you will have like for example LV 21 Sandile on Both slot 4 and Slot 6 on Relic Castle, and similar attributes show up close to eaxh other where you need to do more verifying. Don't get confused by this lol I think i just threw at you more then you need right now xD