Sure,
A Congressman would NEVER, possibly, ever, make a “good” President. Just look at Abraham Lincoln for instance.........
Lincoln was not a particular standout when he was in Congress. However, he was a highly competent, sophisticated, experienced and successful lawyer. He was anything but the frontier rube that is often his popular image. He was one of the leaders in the formation of the Republican Party. He was also a highly skilled orator, a very important skill to have at that time. My point is that he had amply demonstrated skills, abilities and leadership that would be important in the selection of a President. He was hardly "just some Congressman."
When Abe Lincoln ran for president, he hadn't been a House member for some time. He was also president during a day and age when our government was about a thousand times smaller than it is today.
Today's federal government is a highly complex, and gargantuan beast of an organization, that takes real executive experience to command effectively.
In Lincoln's time, all it required was that a man have good character, some capacity for leadership, and an ability to preside (hence, president) over the government. Not so today.