One-upmanship, but not quite

We were in the car when this conversation took place:

Danial: Can I have a sip from your waterbottle?
Sara: No.
Danial: Fine. But I have more toys than you.
Sara: I have more coloured pencils than you.
Danial: Ha, I have more Pokemon cards than you, in fact you have NONE.
Sara: But I have asthma and you don't! HAA!!