everyeurocounts on "foreach if else"

I Have a issue using a mvc type plugin (groupbuying if anyone else uses)

In the controller for the cart view i have these

$line_items = array(
    'subtotal' => array(
    'label' => self::__( 'Subtotal' ),
    'data' => gb_get_formatted_money( $cart->get_subtotal() ),
    'weight' => 10,
 ),
    'discount' => array('label' => self::__( 'Facebook Discount @100%') ,
    'data' => gb_get_formatted_money( $facebookdisc ),
    'weight' => 11,
 ),
    'total' => array(
    'label' => self::__( 'Total' ),
    'data' => gb_get_formatted_money( $cart->get_total()
 ),
    'weight' => 1000,
 ),
);
    $line_items = apply_filters( 'gb_cart_line_items', $line_items, $cart );
    uasort( $line_items, array( get_class(), 'sort_by_weight' ) );

and then in the view

<tbody>
 <?php foreach ( $items as $item ): ?>
   <tr class="cart-line-item-row-<?php esc_attr_e( $key ); ?>">
 <?php foreach ( $columns as $key => $label ): ?>
   <td class="cart-<?php esc_attr_e( $key ); ?>">
 <?php if ( isset( $item[$key] ) ) { echo $item[$key]; } ?>
   </td>
 <?php endforeach; ?>
   </tr>
 <?php endforeach; ?>

<?php foreach ( $line_items as $key => $line ) : //issues here!
 if ( $line['weight'] = 11) : ?>
  <tr class="cart-line-item cart-line-item-row-<?php esc_attr_e($key); ?>">
  <th scope="row" colspan="<?php echo count($columns)-1; ?>"><?php esc_html_e( $line['label'] ); ?></th>
  <td class="cart-line-item-<?php esc_attr_e($key); ?>"><?php esc_html_e($line['data']); ?></td>
  </tr>
<?php ;
  else : ?>
  <tr> this sucks </tr>
  <?php endif; ?>
  <?php endforeach; ?>
</tbody>

The issues occur on the 2nd foreach statement.

If i use just the if statement, all the $lines will show, if i include the else statement it doesn't print the line which i gather to mean its seeing all the weights as 11 or i've mucked up somewhere!

Anyone any ideas of why its not working (BTW if i take out the if statement altogether it prints all the $line_items)