What different between use modelManager createBuilder and Model::query() ?

I have a schema like goods_quality( gqualityId , GoodsId , UnitId , SupplierId, quality )

I want to get sum of quality gourp by SupplierId and GoodsId , so I do as this:

\Pkerp\Models\GoodsQuality::query()
                                    ->columns(array("SUM(quality)","*"))
                                    ->groupBy("SuplierId")
                                    ->groupBy("GoodsId")
                                    ->having("SUM(quality) > 0")
                                    ->execute();

but I got exception

Phalcon\Mvc\Model\Exception: Scanning error before 'SUM(quality) > 0...' when parsing: SELECT SUM(quality), * FROM [Pkerp\Models\GoodsQuality] GROUP BY [SUM(quality) > 0]

Why the group by field form the having() method ?

and I also try to use modelManager it's just work like this:

$this->modelsManager->createBuilder()
                            ->columns(array("amount"=>"SUM(SG.quality)","SG.*"))
                            ->from(array('SG'=>"\\Pkerp\\Models\\GoodsQuality"))
                            ->groupBy("SG.SupplierId")
                            ->groupBy("SG.GoodsId")
                            ->having("SUM(SG.quality) > 0")
                            ->getQuery()
                            ->execute();

I don't know what's different?