The problem isn't about ratio, the ratio you will get is the same. The problem is speed will be affected because of 10 different types of streams for xtool to look for when only one stream type exists, furthermore I don't know if I have uploaded the updated frostbite3 plugin here on the forum or on the mega link (I tend to first run tests before uploading here) but if you haven't you can check it
here
In the configuration there is a note I left inside
"// FIFA 20 and NFS Heat streams are detected the same, use -mfrostbite3:fifa20 or -mfrostbite3:nfsheat to be specific"
This is the 2nd problem, basically these games are detected the same way but the compression settings used are different so being specific will produce better result.