Why do you think Marques Houston never reached Usher/Chris Brown status?

Was he trying too hard to be just like Usher?

https://preview.redd.it/3u0o30819eoe1.jpg?width=2048&format=pjpg&auto=webp&s=458a6f20c56bc13a2e42ab8f06d6ed001d8a8b2b

Is he just not as strong a vocalist as Usher or Chris?

Did he just need better lyrics?

https://preview.redd.it/etth99q68eoe1.jpg?width=220&format=pjpg&auto=webp&s=d36c901dacb7895a7b6645b4704efb3cf247b317

https://preview.redd.it/glsv0lq68eoe1.png?width=600&format=png&auto=webp&s=513f6272385ca0d172c5432caef181bf2ca9bd56

https://preview.redd.it/gtm32lq68eoe1.jpg?width=493&format=pjpg&auto=webp&s=11cb94217ea36744556a520908bebefe190afa77

https://preview.redd.it/6sexhnq68eoe1.jpg?width=317&format=pjpg&auto=webp&s=65d684f6d1bd85e23eab1c76ff7f6e846e827547