Can't you put a page in your proposal like | Big Enterprise IT | Me | feature X | Yes | Yes | fe

Can't you put a page in your proposal like | Big Enterprise IT | Me | feature X | Yes | Yes | feature Y | Yes | Yes | feature Z | No | Yes | feature A | No | Yes | feature B | No | Yes | time-to-market | ~1 yr? | 2 months[1] | ROI | 5 yr | 18 months | (I have no experience in sales, but since you explicitly make the comparison yourself...)