No need for you and Meh (who's extremely unrealistic in almost everything, thinks Kojji Uehara is a lefty, and thinks real life trades are like fantasy baseball trades, but i digress) to get your maxy pads all wet.
Bad things that could happen:
1) Nova could get figured out by the league, like a lot of other pitchers.
2) AJ could be bad AJ all year long and be so innefective and be unable to even provide valuable innings.
3) Garcia's stuff could regress further and get hammered.
4) Noesi, who's Winter League stats and scouting you seem to have not read, could continue his control problems.
5) Warren, Phelps and Noesi (mentioned above) are not ready, and an injury to either Nova or CC leaves the Yankees scrambling.
None or all of this could happen, but just as you're a "realist" with your Sox analysis, be a "realist" with your Yankee analysis.
That being said, the Yankees are certainly in a better position than the Sox in regards to their pitching at the moment.