BigDaddyKrames
Mortal
You can deal chip damage from a distance, he can't(EX Energy Wave hits crouchers by the way). Both of you can build meter, but if you have enough meter for an EX Dash Punch, he should be afraid to fire projectiles at you. As long as you are ducking under his projectiles and not blocking them, you should be building meter more quickly than him, even if he fires projectiles as fast as he can (duck, grab, grab, duck, grab, grab...). If he's letting you get full meter, gladly accept it; that's three 17% damage EX Dash Punches that get you through any clones/balls/melees/etc. (won't beat his X-Ray) and allow you to continue pressure. Perhaps you could even X-Ray him to finish him off if you're close enough to each other and he does something slow.
As long as you have the life lead, he has to come to you because he has no means of long-range chip damage and you do, and you both have means of building meter from a distance (yours is better). If he's waiting inside his clone at a range at which it's unsafe to build meter for fear of EX Ice Beam, Slides, or melees, don't be afraid to back off a bit; a single EX Dash Punch through any of his moves, and you've both outdamaged and switched sides with him, as well as put yourself in a position where you can choose to either apply pressure or back off. If you can, try to bait a Slide or EX Ice Beam, as well; EX Ice Beam is probably his best tool if you're meter building because it's actually rather fast, but you should be able to duck/block in time to avoid it unless he starts it before you start whiffing a grab.
But yeah, Ground Pounds and Ground Pound feints may work as well, if he's really just sitting there blocking, letting you grab at the air until your meter is full. If he has the life lead, they may be your best option, too, assuming that's why he's crouch-blocking behind his clone and not doing anything else. Even if he does this, though, he'll have to set up more clones, and he's vulnerable to (EX) Dash Punches when doing so. He'll be even more vulnerable if he's trying to corner you because he'll have to move forward before setting the next clone if he wants to make any progress.
Ah, one more thing: if you aren't managing to build up at least one bar of meter whenever you get in and after he gets away or counterattacks, try to build up a bit more before going for an EX Dash Punch unless you know you can take him out with it. Simply having the meter to perform an EX Dash Punch limits his options.
As long as you have the life lead, he has to come to you because he has no means of long-range chip damage and you do, and you both have means of building meter from a distance (yours is better). If he's waiting inside his clone at a range at which it's unsafe to build meter for fear of EX Ice Beam, Slides, or melees, don't be afraid to back off a bit; a single EX Dash Punch through any of his moves, and you've both outdamaged and switched sides with him, as well as put yourself in a position where you can choose to either apply pressure or back off. If you can, try to bait a Slide or EX Ice Beam, as well; EX Ice Beam is probably his best tool if you're meter building because it's actually rather fast, but you should be able to duck/block in time to avoid it unless he starts it before you start whiffing a grab.
But yeah, Ground Pounds and Ground Pound feints may work as well, if he's really just sitting there blocking, letting you grab at the air until your meter is full. If he has the life lead, they may be your best option, too, assuming that's why he's crouch-blocking behind his clone and not doing anything else. Even if he does this, though, he'll have to set up more clones, and he's vulnerable to (EX) Dash Punches when doing so. He'll be even more vulnerable if he's trying to corner you because he'll have to move forward before setting the next clone if he wants to make any progress.
Ah, one more thing: if you aren't managing to build up at least one bar of meter whenever you get in and after he gets away or counterattacks, try to build up a bit more before going for an EX Dash Punch unless you know you can take him out with it. Simply having the meter to perform an EX Dash Punch limits his options.