what battlegroup?
1500's are actually quite difficult, i went down to 1350s before i started winning and now im around 1450. Occasionally i sub in a pally in my 5th spot todo some heals and it works well.
You will become a smarter arena player without knowing it and in a few weeks it will be more like 7w 3losses
currently im 19w 31l in total and my healer is 7w 3l lol