Thirty-one years ago I got into the commercial real estate business. It was quite fortuitous. I was taking ballroom dancing lessons and my instructor asked me if my wife and I wanted to join her and her boyfirend after the next lesson. We did and it turned out he owned a commercial real estate brokerage company and offered to hire me as an office leasing broker. I literally knew nothing about real estate before I got the job. Now, thirty-one years later, I know a lot. I learn something new every day. I read real estate magazines and trade papers and my company is constantly supplying information. This is the total focus of my business life, (notice I didn't say my entire life). So what's my point? Simple, if a landlord hires me to help lease office space in his building, and you come along with an interest who is in a better position to win in the negotiations? If knowledge if power, then I can totally dominate. What if you brought me along on your side? Now, at least you have a fair match.
Next question...How much do market conditions affect the outcome of negotiations? If it's a fair match, as described above, then market conditions can rule very strongly. If it's not a fair match, then the stronger side will dominate. In other words, two well matched real estate experts will end the negotiations within a relatively narrow range for a deal as determined by market factors, while two unequally matched parties can be pushed all over the map.
Conclusion...Which works best for you? Thought so. Get a knowledgable, experienced and respected broker on your side and you will do far better for yourself.