5149 formula in making a decision

Have you ever got this challenge from your associate or partner when they seek for your advice in deciding a answer for them.

"Which one is better, item A or item B?"

"What one you prefer?" I asked

"I like both. But I can only afford to get one. How?"

"Just choose one"

"But both are nice and I really can't decide which one"

"Now imagine you have to award 51% Vs 49% to decide which one to choose, it will be easier for you to make a decision then"

Question to ponder: "What is the extra 1% factor that make the difference in deciding what you want in life?"