A 2000W inverter generator is much, much quieter than the construction generators you're used to seeing. Still louder than an F150, but quiet enough so it's not very bothersome. 50-60dB or so.
That would depend more on the state of the exhaust of the F150. I have the quietest Honda inverter generator (which AFAIK is the quietest generator) and I have an F150 with the most powerful motor available. The generator is quiet for a generator, but much louder than the F150 at idle. It might be pretty close on a hot day during the times when the high speed fan cycles on, though.