When I hear “easy”, I generally assume that hound would not have enough drive to suit me. Easy in my mind is a hound who merely follows a rabbit without much intent to overtake it. A lot of people like that type.
Easy is very well in the eye of the beholder. It prob means not over competitive for sure. Over competitiveness messes way more up than other traits ever will. The term though, to be understood in its context, would imo require you to know who you are speaking to. A gun dog brace guy says easy it might lack just a step or two to win, heck a hare guy could just want a pinch more competitive fire and foot too but the word brings up a very different dog in each guys eye. The easy gun dog brace guys hound is a useless pot licker to the hare guy. His easy dog is flat out psychotic to the gun dog brace guy.
Idk if you can exactly come up with a definition I’d say it’s very variable. Just not competitive or fast enough for the fellow you’re speaking to imo.
I would add too, I bet 80% of beaglers think they run a dogs that are a speed of 6 or upper-medium dogs. I have seen Branko and hare hound dogs called upper-medium and I have seen super-conservative appaclachian hounds called upper-medium. Same thing with line control. Everybody has "decent line control." It could be "yeah they are decent, never more than 3 feet from the line" or "yeah they are decent, line is always between their front legs." Bowguy is right, it really is all about who you ask and what their goals and preferences are.
I have a hound that is easy that is sometimes first out of a check, but never leaves the line. He makes a pack better, but will never win a trial. He will also never take away from a race either. When I am hunting, he is a great asset. He is easy though.