Leviathan Reloaded appears to have some good reviews, so it should be a useful product.
The key to achieving a loss of what you termed "extra poundage" is to simultaneously trigger elevations in norepinephrine levels and boost lipolytic processes. Norepinephrine is the key endogenous thermogenic hormone in the human body.
Norepinephrine levels can be boosted a) directly by compounds such as methyxanthine/caffeine (in RPM), flavoniods, l-tyrosine (preferably via L-Dopa as in Mucuna Pruriens in Lipotrophin-PM by AN), and Yohimbine (a potent alpha-2 blocker that ensures sustained norepinephrine levels), or b) indirectly via cAMP-boosters/phosphodiesterase inhibitors/cGMP-boosters such as icariin (in RPM and Drive), rhodiola (in IGF-2, NeoVar), forskolin (in Drive), dodder seed (in Drive and IGF-2), methylxanthines/caffeine (in RPM), Naringin (in Drive, RPM), OPC (in RPM), and so on.
Glococorticoid antagonism, prolactin inhibition, growth-hormone release, and testosterone modulation are also an important part of the process. These effects are achieved via such agents as icariin (via increased dopamine), rhodiola (via increased dopamine and serotonin), mucuna pruriens (L-Dopa), phenylethylamine (PEA), bacopa monnieri (in Lipotrophin-PM, also for thyroid synthesis), and safed musli (in IGF-2).
Apart from the "poundage optimization" effects of these compounds, one should also expect glycogen and creatine-phosphate boosting/nutrient partitioning/insulin modulation (rhodiola, corosolic acid (banaba extract in NeoVar), mucuna pruriens), superior protein synthesis (icariin in RPM and Drive, and green tea extract in Lipotrophin-PM), aromatase inhibition (icariin, OPC, Naringin/naringenin), thyroid metabolism, fat metabolism, appetite modulation (bacopa monnieri, green tea extract via CCK, forskolin, caffeine, and so on).
Altogether, these compounds and processes collectively produce quality lean mass, fat loss, improved strength and endurance, hypertrophy and anti-catabolism.