I agree. Lizzy finds Col Fitzwilliam quite agreeable for his open temper and pleasing address just as she did Wickham. Compare these two descriptions:

Colonel Fitzwilliam seemed really glad to see them; anything was a welcome relief to him at Rosings; and Mrs. Collins's pretty friend had moreover caught his fancy very much. He now seated himself by her, and talked so agreeably of Kent and Hertfordshire, of travelling and staying at home, of new books and music, that Elizabeth had never been half so well entertained in that room before; and they conversed with so much spirit and flow… (Ch. 31)

Mr. Wickham was the happy man towards whom almost every female eye was turned, and Elizabeth was the happy woman by whom he finally seated himself; and the agreeable manner in which he immediately fell into conversation, though it was only on its being a wet night, and on the probability of a rainy season, made her feel that the commonest, dullest, most threadbare topic might be rendered interesting by the skill of the speaker. (Ch. 16)

However Lizzy does see differences between them:

They called at various times of the morning, sometimes separately, sometimes together, and now and then accompanied by their aunt. It was plain to them all that Colonel Fitzwilliam came because he had pleasure in their society, a persuasion which of course recommended him still more; and Elizabeth was reminded by her own satisfaction in being with him, as well as by his evident admiration for her, of her former favourite George Wickham; and though, in comparing them, she saw there was less captivating softness in Colonel Fitzwilliam's manners, she believed he might have the best informed mind. (Ch. 32)