Ok, I've tried my best for write this table here on the forum, so forgive me some align error. For check the k/d ratio for the various class i've used the actual leaderbord, and selected to list by kills. Of Course, was impossible do a complete list, so i've selected the first 5 page and scraped the data from there, and choose to select around 11 name per class ( where possible , actually few SW and HR are in the top 5 pages ).
I will divide the post, too long for a single post in html.
Of Course, all the info of the table showed here are public, each one can obtain the same data just checking the ingame leaderbord.
This will show some interesting data, here the table: