The video on the link is rather low resolution.
Fortunately I was able to get an antenna that works to watch the Super Bowl in HD even though the local NBC affiliate and Time-Warner are still at an impasse about carrying the channel on cable. The NBC affiliate was running promos suggesting viewers switch to Grande or get satellite service from Dish Network or DirecTV. Time Warner was giving out free antennas.
I’m getting a sharp picture on Both my Laptop and iPad II.
Maybe its your speed?