After watching a lot of games from that Porto generation, I can come with these suggestions for Jankauskas, interesting but not so prolific striker:
ATT 81, 82 tops, he wasn't that kind of a threat to deserve 85
DEF low 40's, he returned to help his defense, during free play and for corners
BAL 90 very strong (which is logical considering his stature) could cope in duel with more than one defender easily
RES 84 - his main attribute when scoring, scored a lot of goals (if in his case "a lot of goals" can be said

) by tapping in bounced balls, or lurking for defenders or keepers mistake
AGI - high whites, he was pretty agile even one wouldn't say that for him
SPA, SPS - need a raise to high whites, his main role was to keep the ball and distribute it to a teammate, and he did it pretty good
CUR - I'd raise it, to at least 65, it's just too low
DA, TEC both can be on low 80's, he was good in that aspect, especially at keeping the ball in his feet
Don't know where you got the info about WFA and WFF, but he used a lot his weaker foot during a game, even scored some spectacular goals with it.
https://www.youtube.com/watch?v=OcQUQCxgSPYhttps://www.youtube.com/watch?v=fKHl1mW8-90 (disallowed goal and that screamer are scored with left foot)
I'd even put him WFA 6, WFF 7.
Also, MEN and TMW can be in low greens.