Alphabatical puzzle BFMYEO=>K HQAJUC=>?

It looks like there may be some relation ship with the numberical number of the alphabet

lets see from below
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

If we sum the value of
BFMYEO=> 2 + 6 + 13 + 25 + 5 + 15 => 66

and if we take average value i.e divide by 6 (total 6 alphabets) => 66/6 => 11 which represents K
From the same logic
sum of HQAJUC=> 8+ 17+ 1+ 10+ 21+ 3 => 60
avg => 60/6 = 10 => alphabet J