Comodo's old virus prog (Trustix) was a licensed version of Kaspersky. Is this new one a completely new program? I presume Comodo won't be giving away a free version of Kaspersky, will they? They must be starting to write their own virus definitions, mustn't they?
If they're giving away a free version of Kaspersky's AV and the definitions still come from Kaspersky, that would be a very attractive proposition. On the other hand, if they're just starting out in the field for themselves, that would be a whole lot less attractive.