There was an open tender with all of the current/next gen western suppliers participating, with analysis comparing the capabilities of Eurofighter, Rafale, F-18 E/F, Jas Gripen, F-35 and their adjunct systems including weapon systems, tactical integration and their capability for several decades.

Finnish air-force is quite professional and skilled in what it does.

As a software geek I presume they spent the money wisely and with sufficient knowledge of what they are doing. Norway has 24 F-35:s in operation so if there were obvious deficiencies those would likely have been heard over the grapevine as nordic forces are quite close.