answering in parts:
PS: no. only frw a merc can supply is the vigor aura. this gets overwritten by your higher level vigor aura
both other questions depend on your full setup. frw and vigor slvl have diminishing returns, so depending on your setup, the effectiveness can change
Q1:
your frw from gear is 35+30+20+40+20+14*3=187 frw
(equal to 83 efrw, see here:
https://www.theamazonbasin.com/wiki/index.php/Faster_Run/Walk )
vigor adds 44 efrw, so total is 127 efrw
trang armor gives 40 frw but -10 efrw, giving a total of 227 frw (= 90 efrw) from gear with additional 34 efrw. total is only 124 efrw now, so this makes you slower!
Q2:
figure out yourself ;)
calculate all frw from items
convert that to efrw via the table provided
add efrw from skills and penalty
see which number is largest
OK TY Guys it helped me into the topic.