It depends on how large the object is. If you're talking about an object 100ft in height/width/whatever, there's a noticeable difference. If you're talking about a smaller object, the pressure difference is negligible. This website below related links give more depth.
Water pressure is greatest against the bottom of a submerged object?
FALSE
FALSE
true
greater than
Water pressure is greatest against the bottom of a submerged object?
FALSE
FALSE
FALSE
greater than
true
greater than
Forces are exerted on a submerged object due to water pressure not being balanced due to buoyancy. This is when the pressure at the bottom of the submerged object is greater than the fluid on the top of the object, thus projecting the object upward.
Greater than ~ Apexfalse - apex;)
The greater the pressure against the bottom of a submerged object produces an upward buoyant force
FALSE
Because the buoyant force is the result of different pressure at different depths, and there is no difference in pressure horizontally.