Great is a subjective description and is no different to an individual choice of the 11 programs on the list.
There are many, many forum users who are using the comodo firewall feel it is a good free firewall despite your reservations about comodo in general, which you still haven't shown any evidence to support that view. So people will make their minds up based on how the firewall performs for 'them.'
I don't use comodo firewall not because I don't feel it is bad, but because I have a lifetime license for Outpost pro firewall. If however, I did become dissatisfied with Outpost then I would most certainly try comodo based on its reviews and results in firewall leak tests.