If you want to hide the Add to Compare button for specific products you can use the following filter hook:
add_filter( 'woocommerce_better_compare_show_add_to_compare_button' ,'hide_compare_btn', 10, 2); function hide_compare_btn( $show, $product ){ if($product->get_id() == 123) { $show = false; } return $show; }