It's not unreasonable to assume that founders receiving Kima15 funding also go on to raise a sizable equity round later. I think the offers can be simplified by saying YC is ($18k + YC program) for 7%, and Kima15 is ($150k + Kima15 network) for 15%.

That means the YC program needs to be worth $52k more than the Kima15 network/brand for the lower valuation to make sense. I wouldn't be surprised if it is, but we'd really need stats on the subsequent funding rounds of Kima15 companies to compare them in this way.