Juan o savin
1 0 7 <- zeroes and their placement matters in Numerology, even when they don't add to anything. 107 has a different meaning than 17.
All these gematria and numerology things are highly reliant on interpretation. But, for fun, let us see what "Juan o'Savin" adds up to.
Juan o savin = 126(9), 36(9), 144(9), 63(9) <-No Seventeen in sight.
If I were to make a guess, I think "Q" would look more to encoding "17" into the gematria rather than having a simple phonemic similarity. That's just me tho, your question and its underlying assertion could be accurate, only Juan knows.