The correct frame size is the one that allows you to obtain a proper fit (numbers be damned!) For most people, there is more than one frame size that can provide this. Frame sizes are very subjective and vary widely between brands and models. Basically, a 54 in one frame can be very different from a 54 in another.

Chances are, at your height most any 54 frame will not allow you to get a good fit.

I am 6'-3" and I typically ride a 58 with a 575mm VTT dimension. That is about the smallest frame I can ride and still get a good fit. To make that work I use a 130mm stem, a seatpost with at least 20mm of setback that is nearly extended to it's maximum (semi-compact geometry), and a saddle with long rails extended back about as far as they'll go. I ride a fairly aggressive position, but that configuration works well for me and has done so for many miles at reasonably high intensity.