Unexpected wattage into charge controller (solar panels)
In this system there are too many things that we don't know how they work. My suggestion is to, if possible, independently validate things. To test your solar panels, use a power resistor that will extract near the maximum REALISTIC power from the panels. The idea is you connect a power resistor to the panel, put it in full sun, and measure the voltage on the resistor. The two panels should give similar voltage readings assuming you test them at very close to the same time when the view of the sun is not obstructed. The power delivered to the resistor is V^2 / R, where V is the measured voltage and R is the resistor value.
Resistor value: approximately Vmpp/Impp. From the lensun link, that would be 17/6.5 = 2.6 Ohms. 2.7 Ohms is a standard value. I think a 50 or 100 Watt resistor should be OK provided you only connect it for about 1 second (look for a resistor with short-term overload rating). Use this to test both panels independently. They should be close to the same. If they are, then stop worrying about the panels.
I don't have full details for the Goal Zero. Does it do MPPT? We don't know. If it doesn't, then you shouldn't necessarily expect to get anywhere near the rated power of your panels.
By the way, MPP for solar panels is given under unrealistic test conditions. Mainly, the temperature is at 25C. In general, when solar panels are held in full sun, they will be much hotter, like 40C. The maximum power will be lower at higher temperatures. And if they are not pointing absolutely perfectly straight at the sun, then there will be further reduction do to reduced projected area. So don't expect to see 220Watts.
The only way I can think of to validate the Goal Zero device is to connect it to a known good solar panel such as the type they actually recommend. And verify that it performs according to their advertised specifications.