YES. Upstream at 28Mbps - fine. Downstream at 73Mbps - far enough above 40 to justify it. Also, remember that is a reasonably accurate predicted figure that is based around a 6dB margin so you will be around there to start. You may then find the margin drops to 5, 4, 3 dB at which point you will be getting a lot closer to 80.
Its very unlikely he'll see sub-6dB SNR due to being on an ECI cabinet but as you said should see around 70MBit for sure and if g.inp was enabled on it may get close to 80.