Tennyson scarcely ever wrote a line which was not unmistakably poetry, while Browning could write pages which were unmistakably not poetry.
I do not mean, in saying all this, that Browning did not appeal to that which is deepest and universal in nature and human nature, but only that he did not appeal to it as much as Tennyson.

Browning is often simple, lovely and universal.

And when he speaks out of that emotional imagination wherein is the hiding of a poet's power, and which is the legitimate sovereign of his intellectual work, he will win and keep the delight and love of the centuries to come.

By work of this type he will be finally judged and finally endure; and, even now, every one who loves great poetry knows what these master-poems are.

As to the others, the merely subtle, analytic poems in which intellect, not imagination, is supreme, especially those into which he drifted in his later life when the ardour of his poetic youth glowed less warmly--they will always appeal to a certain class of persons who would like to persuade themselves that they like poetry but to whom its book is sealed; and who, in finding out what Browning means, imagine to their great surprise that they find out that they care for poetry.