First, the humbuckers in Epiphone Dot and P90 in Epiphone Casino are two distinctive features of the two guitars. In terms of price, Epiphone Casino is quite expensive compared to Epiphone Dot, which makes the Dot to be more affordable compared to Epiphone Casino. With $399.00, you can get yourself an Epiphone Dot guitar, whereas you will need to pay more for Epiphone Casino, usually around $699.00.
The high price of the Epiphone Casino guitar is not always an issue for most guitarists who want it. In terms of weight, Epiphone Casino guitar weighs more when compared to Epiphone Casino. Another difference is that the Epiphone Dot is made to be a semi-acoustic guitar, whereas Epiphone Casino is an acoustic guitar.
The Epiphone Dot can be used for different functions though it is quieter compared to Epiphone Casino, which produces loud sound and feedback. Aside from these little differences, both guitars are good.