Not sure how many and who against Miller scored in his first 16 caps but it wasn't many. Just checked it was 2,one against Iceland and one against Germany.
The main reason for wanting McBurnie is his club career so far and only Adams has the same sort of record.
I doubt if there are any defenders who would prefer to play against McBurnie rather than Dykes, Shankland or Brown.
McBurnie is also a massive asset in defence, and with the lack of quality we have at the back we need 10 outfield players that can contribute.