Can't seem to find the Finnair Tier Points earning table. But it seems like I do a lot of flights that are "shorter" (Today's is SAN-PHX-ICT), so not super long haul that Iberia benefits from.
I am starting with my first AA flights this afternoon, Gonna go with Finnair over Iberia/BA.
(I'm 6ft9in and 400lbs, so doing the BA legs, would require paid Biz/First on BA, likely not doable this year for me anyway).
Building up the Avios for redemption later someday is fine.