Of course we can.
We were a phantom high stick away from winning the series in 6. The Holl interference in Game 7 was questionable also considering Tampa scored a goal just like that the game prior. We had the most lopsided 1st round refereeing of the playoffs (in terms of PP advantages by one team over the other).
This year, Toronto got better and Tampa got worse.
The biggest question mark however is our goaltending. It's been inconsistent. Some games Murray and Samsonov look like stars, other games it looks like it's their first time playing goal. To be fair, Campbell was just as bad last season but Tampa got bad goaltending in the first round also.
I expect Vasilevskiy to play better than last series, which probably means Murray/Samsonov need to give us better goaltending than Campbell's .897 last series. I would say if Murray or Samsonov can keep pace, or stay within reach of Vasilevskiy, we probably win the series as it stands right now assuming no more moves by the trade deadline, fair refereeing, and no phantom calls because we're up.