I was sent the 0.2 Bitcoin first, without escrow. What kind of scammer would send the PayPal, when they have already received the BTC? I returned 0.5 BTC to a user after a trade failed to go through as well, and these amounts are among the smaller amounts I've been trusted with.
One that is wanting to scam more via the same methods or do a chargeback at a later date which you have plenty of time to initiate. You also only sent it after he opened a scam accusation against you. There's enough red flags here for me to warrant the negative feedback but I'll happily remove it if you can provide reasonable proof that this is your account, but it looks to me like it very likely isn't.