You don't have to buy a bridle. The same thing can be accomplished with two equal length straps and a shackle. Example: two six foot chokers (straps), one attached at each tow hook and then the both of those married together with a shackle. No point in spending the money in a bridle.
That doesn't equalize the load unless the pull is directly perpendicular to the bumper. A bridle typically uses a pulley block that can slide along the line to evenly distribute the load.