All teams had to increase the pressure by 5psi. So, it would have been out of design spec for all the teams, which would have caused some performance issues. So, by Mercedes running lower PSI, they are getting an advantage, compared to other teams because they are still within their design limits, while other teams are out of the design limits. Simple.
One other thing, I used to like Mercedes, I cheered for Mika, for Kimi at McLaren Mercedes. But, after what Mercedes did with their illegal tire tests, which FIA didnt give a sufficient penalty for, I lost some respect for Mercedes and the brand. With this, now I lost even more respect.
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