Does a cuck have to have a small cock?

I never got to watch my wife with anyone else, but she did treat me to tales of what happened on her dates and girls' nights out. I have a 7 inch cock, 5 inches in circumference but one of her favourite men only had about 4 inches.

Once when I undressed she commented that "Mick's cock hard is the same size as yours soft", but he was stocky, heavily tattooed and fucked her hard whereas I am skinny, with no tattoos and tended to be gentle and considerate in bed. I think she really enjoyed the difference. Mick was a former work colleague of mine who I didn't particularly like or get on with, but Debbie did. He'd pursued her for some years, almost as soon as he joined the company and saw my wife with me. Her initial rejection of his advances didn't put him off though and eventually she did agree to go to his house one Sunday afternoon whilst his wife was out. I picked her up later after he'd at last given her a good pounding.

Despite her telling me that "it wasn't all that" and saying "when he said he had a small cock I thought he was joking, but he wasn't", they fucked again a few weeks later and she would call him from time to time over the course of the next 2-3 years whenever she decided she needed to be fucked hard. In between she also went with a few other men, especially being fond of young cock, lads in the 20s where possible.
Peter C