Hello,
Both screenshots are the same. Unfortunately, the default WPBakery element does not have option to change the style of the arrows, so it’s possible only by additional customization of the styles but I don’t know what design you want and can’t suggest anything.
Also, if you build sliders you may take a look at the Revolution slider (comes bundled with theme), it also has advanced settings for the slider navigation and for the responsive.
Regards