Eva Angel is less attractive facially [IMO, with the usual apologies], having that 'mean-mouthed' look a la Stephanie Swift; Count is more 'statuesque' and usually has her pubes shaved into a 'Flying V' pattern. Count has worked fairly extensively in the US; AFAIK Eva Angel never has.
The d/b credits for 'Susan Canelly' will probably be for Eva Angel; those for 'Vlasta' will be for Count. I'll try and separate those titles I've seen when I get time. For the moment [and subject to verification
Eva Angel: Monaca di Monza/Rose et la Fouet/Junge Schlampen....arschgedehnt/Klinik fur Fotzendehnung
[=Clinica degli abusi sessuali]/Max. Perv: Fotzen Therapie;
Catherine Count: Flammen der Lust [Gina Wild- not listed?]/Hongrie Interdite 22/? Debora: Fetish Society.